SiC
800 V DC for AI Racks: Six Failure Modes Chip Teams Must Design For
Moving a 1 MW rack from 54 V to 800 V cuts the current from about 18,500 A to 1,250 A, and that sum explains why the industry is making the change. It also creates a different kind of fault problem: a low-impedance DC network full of capacitors, with no current zero crossing to help extinguish an arc, and protection that may need to act within microseconds. Most writing on this subject is aimed at facility engineers. This review takes the same…